- Brianna is the female form of the name Brian, possibly from the old Welsh element bre («hill»)  or brig, «high, noble»; possibly «strong» and a variant of Brighid. 
- Ellen is the medieval English form of Helen, which derives from the Greek ‘????? (helene) «torch» or «corposant». 
- Randall derives from the given name Randel, which is a medieval diminutive form of names (e.g. Randolf) beginning with the Germanic element rand meaning «rim (of a shield)».
- Fraser may be derived from Fredarius, Fresel or Freseau. Another suggestion is that the Frasers were a tribe in Roman Gaul, whose badge was a strawberry plant. 
- MacKenzie is the anglicized form of MacCoinnich, a Gaelic patronymic name meaning «son of Coinneach». The personal name Coinneach means «handsome» or «comely». 
- Brianna Ellen Randall Fraser MacKenzie is named for Jamie’s father, Brian, and mother, Ellen. Before Claire goes back through the stones prior to the Battle of Culloden, Jamie asks her to name the child after his father. When Claire rejoins Jamie in 1766 Edinburgh, Jamie tells Claire she pronounces the name wrong – it’s not Bree-ah-na, it’s Bree-anah.
- Brianna has type B blood. 
- Went to the 18th century with her Swiss Army knife.
- Has a talent for drawing and painting, a talent she got from her grandmother, Ellen.
Brianna asks Claire if she misses her father, Frank Randall. Claire says she does, though they didn’t always get along.
Roger shows Brianna the newspaper clippings reporting Claire’s sudden return, and that he knew she had been pregnant but thought it was someone she met in 1945. Brianna reads over the clipping growing more and more furious. Claire tells Roger that she and Jamie went to Paris to try to stop Charles Stuart.
After, Roger and Brianna talk and Roger tries to reassure her that she might see her mother again. Bree is doubtful. She knows that Jamie needs her mother, but so does she. Roger comforts her and tells her that Claire isn’t the only one who cares for her.
After Roger changes into his Highland dress, Brianna thinks he’s gorgeous and says her mother was right when she said men in kilts were irresistible. At the mention of her mother, she bravely tries to turn the conversation and Roger apologizes for bringing her here. She says it’s okay; it’s just so Scottish, but she’s glad to be there. He reminds her that she’s Scots also. Brianna asks why he’s chosen the name MacKenzie and is wearing the MacKenzie badge with the clan motto. He says it’s his father’s name and the name he was christened with.
When she finds the notice of her parents’ death in 1776, Brianna sends Roger a box of her belongings and then travels into the past. In 1769, Scotland, Brianna travels to Lallybroch wearing men’s clothing. She encounters her cousin Young Jamie, and she introduces herself as Brianna Fraser, die Fraser. He’s surprised, but recognizes her resemblance to his uncle. Young Jamie welcomes her to Lallybroch, and Brianna is pleased to discover that not only has she come searching for her father, but she seems to have found a whole slew of relatives.
Ian asks her when she sees Jamie to ask him what he wants done with Lallybroch now that he has an heir. She assures him that her father won’t want that, and he seems surprised she knows Jamie so well without having met him, and he says Claire knows Jamie even though she is a Sassenach. She asks him if it was true Jenny saw Claire’s «fetch» at Jamie’s wedding to Laoghaire and Ian confirms she did, but by then it was too late to stop the match. He tells Brianna that Jamie was very heartsick when he came back from England, and all Jenny wanted to do was give him some comfort. Ian tells her that Jamie had left Laoghaire long before Claire returned.
She finds him relieving himself against a tree and tells him she is his daughter. His first impression is that she’s huge. He says in his mind, she was a child, not a woman grown. He tells her that Claire will be so happy to see her, and Brianna breaks down in tears. He comforts her and calls her darling and his blessing in Gaelic and then gives her first lesson in the language. She’s not sure what to call him as Frank was Daddy and Father seemed too formal. He tells her to call him Da. Jamie gathers up Brianna and Lizzie and takes them to River Run, his Aunt Jocasta’s plantation, but exhausted, she quickly falls asleep.
Brianna asks about the laboring cow, and he says it’s her first calf and that she was a little too young to breed. She wanders over to the sow and is comforted by her strong motherhood. Jamie says she’s had four litters so far and not one piglet lost. He asks if he should walk her to the house, and she says she’ll stay with him for a while. He gives her a cup of cider, and she says she needs to ask him if he killed Jack Randall. He’s cautious, wanting to know how she knows that name, and she tells him before Claire left she told her about him and about what happened to him in Wentworth Prison.